We need to use pushbuttons for subject response input, and have been stymied because the parallel ports on our SV-1’s are not currently supported in SL. As a work-around, we are considering the X-Keys USB Switch interface. This is a twelve-input switch interface that emulates a USB keyboard. Each input can be programmed with a keystroke sequence macro. AFAIK, only switch closures are detected, but I’m not sure about that. Anyway, you can program, say, switch input #3 to send “3-down;wait 50 ms;3-up”, which would emulate a keyboard input on the “3” key.
Hopefully, this would be recognized by SL as an ordinary keypress and be handled appropriately. When I receive the device, I will test it and post the result here.
Another, smaller device is Don Johnston’s five-input switch interface, which can, depending on its mode, emulate either a keyboard or a mouse. The smaller number of inputs and almost equal cost of the DJ made me lean toward the X-Keys device; from the point of view of SL, they both should work the same way (i.e., both are extra USB keyboards).
Has anyone already tested either of these with SL?